DEWALT built high power, high efficiency motor delivers maximum performance in all drilling and fastening applications XRP extended run-time batteries provide long run-time & battery life Patented 3-speed transmission matches the speed to the application for optimal performance Heavy-Duty 1/2" axial locking chuck locks the sleeve to prevent bits from slipping and falling out Preferred ergonomics provides optimal balance, size, and weight, This kit comes with a One Hour Vehicle Charge, Weight: 12.25 lbs.